<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<style>
		body{
			text-align: center;
		}
		img{
			margin-top: 100px;
		}
		.turn-back{
			text-decoration: underline;
			color: #16d0d8;
			font-size: 20px;
		}
	</style>

	<title>not found</title>
</head>
<script>
	function back(){

	}
</script>
<body>
	<img src="404.png" alt="404">
		<h3><a class="turn-back" href="javascript:window.history.go(-1);" >返回</a></h3>
</body>
</html>